摘要
研究了Cr_2O_3,Li_2CO_3,WO_3对于0.09(Sr_(0.54)Pb_(0.26)Ca_(0.20))TiO_(3-0.1)Bi_2O_3·3.5TiO_2为系统的中高压瓷介电容瓷料的介电性能的影响,实验发现掺加Cr_2O_3对于该瓷料的ε-t曲线有压峰作用;而Li_2CO_3的掺加有提升ε-t峰作用,介电常数随着掺加量的增加而提高,损耗在45℃以下随掺加量的增加而提高;WO_3的添加也具有提峰作用,并且同时可以降低高温段ε的温度系数。
The influence of Cr2O3,Li2CO3,WO3 on dielectric behaviors of the system 0.90(Sr0.54Pb0.26Ca0.20)TiO3-0.1Bi2O3.3. 5TiO2 was investigated.The results showed that ①the incorporation of Cr2O3 makes the permittivity peak broader;②the addition of Li2CO3 raises the permittivity peak and the dielectric loss below 45℃; ③the doping of WO3 makes the permittivity peak higher, in the meantime reduces the temperature coefficient of permittivity at higher temperature.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第A19期78-80,共3页
Acta Scientiarum Naturalium Universitatis Sunyatseni
关键词
瓷介电容器
掺杂
温度系数
ceramic capacitor
doping
temperature coefficient
